[obm-l] =?iso-8859-1?Q?algu=E9m_explica_isso=3F?=

[ReNNeR]

1 + 1 = x (1 + 1)� = x� 1 + 2 + 1 = x� (1 + 1) + 2 = x� x + 2 = x� x� - x - 2 = 0   delta = b� - 4ac delta = (-1)�-4.1.(-2) delta = 1+8 delta = 9 x = [1 +√9]:2 ou x = [1-√9]:2 x = [1 + 3]:2 ou x = [1-3]:2 x = 2 ou x = -1. 1+1 = 2 ou; 1+1 = -1 ??